ITEM NAME:1 Pair Bluetooth V5.1 Earbuds for Sports Bluetooth Headset with Microphone Description: Lower power consumption, stable signal, excellent compatibility, compatible with all the smart phones, tablet PC, etc. The whole body headset has only one button, all operations can only be done with one button. Automatic Pair, Automatic Power On/Off: When take out the headsets from charger box, the two headsets will turn on automatically and pair with each other automatically. when put back the headset to charger box, it will turn off automatically. Swear-proof and ware-proof structure: IPX-7 daily waterproof, sweat resistance and rain resistance, but can not soak in water. Power capacity will show on display screen, you can see the power situation anytime, do not worry about the electricity. Specification: Communication distance: about 20 meters (under barrier-free environment) version: V5.1+EDR Earphone working time: about 3 hours Headphone standby time: about 60 hours Charging time: about 1 hour Headphone battery capacity: 3.7V 50mah Headphone charging time: about 1 hour Charging case battery capacity: 3.7V 2000mah Charging case charging time: about 4 hours Package Includes: 1 Pair Earphone with Case 4 Piece Ear Caps 1 Piece Data Cable 1 Piece User Manual Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement..Version: V5.1+EDR. 1 Pair Earphone with Case. The whole body headset has only one button, all operations can only be done with one button. Headphone battery capacity: 3.7V 50mah. 1 Piece Data Cable. 1 Piece User Manual.